Compression connection device for pipe

ABSTRACT

Disclosed is a compression fastening device for a pipe. The compression fastening device for a pipe comprises: a tightening coupling part which has connection members connected in a manner of surrounding the circumference of a connection part of a pipe body, and which is formed so as to be capable of generating a tightening force for compression fastening the circumference of the connection part of the pipe body while operating in a state where the gap of both ends of the tightening coupling part becomes narrowed by a tightening tool; a tightening compression part which has a flow-type compression member and a fixed-type compression member formed so as to be capable of compressing the circumference of the connection part of the pipe body while being pressed in a contact state by the tightening force of the tightening coupling part; and a contact guide part which is formed so as to be capable of guiding the contact state between the tightening coupling part and the tightening compression part so that the gap of both ends of the tightening coupling part can be manipulated by the tightening tool in a set state where the gap of both ends has been narrowed.

TECHNICAL FIELD

The present invention relates to a compression connection device for pipes.

BACKGROUND ART

A working method for performing piping by connecting tubular bodies includes a compression connection (or connection) method for conveniently and rapidly connecting the joint parts of tubular bodies using a fastening compression force.

A compression connection device is used in the compression connection work. The compression connection device is basically configured to generate a fastening force while it is manipulated in the state in which the interval between both ends of the compression connection device is narrowed by a separate fastening tool (or a hydraulic pressure device or transmission device) so that a fastening force is generated in the direction in which the diameter of a pipe is retracted in the state in which the circumference of the joint parts of tubular bodies have been surrounded.

A compression connection device used in such a compression connection work includes Korean Patent No. 10-0762293 entitled “Apparatus for Press-Connecting Pipes.”

However, the apparatus for press-connecting pipes of Korean Patent No 10-0762293 has a drawback in that a manipulation and compatibility corresponding to a fastening tool are poor because it does not have a structure integrated therewith, which is easily manipulated by the fastening tool by narrowing the interval between two reference blocks as much as possible when the joint parts of pipes are set in the state in which they are surrounded in such a way as to be compressed and connected.

In particular, if compatibility corresponding to the fastening tool is not secured, it is inconvenient to additionally use a fastening tool having a size and structure capable of accommodating a large interval between the two reference blocks when the large interval is generated, for example.

DISCLOSURE Technical Problem

The present invention has been made in an effort to provide a compression connection device for pipes, which is formed to have a structure capable of further improving a manipulation and compatibility corresponding to a fastening tool when a compression connection work for the pipes of tubular bodies is performed.

Technical Solution

An example embodiment of the present invention provides a compression connection device for pipes includes:

fastening connection units configured to include connectors connected to surround the circumference of the joint parts of tubular bodies and to generate a fastening force for compressing and connecting the circumference of the joint parts of the tubular bodies while operating to narrow an interval between both ends of the fastening connection units by a fastening tool;

fastening compression units configured to include movable type compression units and fixed type compression units formed to compress the circumference of the joint parts of the tubular bodies while being pushed by the fastening force of the fastening connection units in a contact state;

contact guide units formed to guide the contact state between the fastening connection units and the fastening compression units so that the fastening connection units are manipulated by the fastening tool in a setting state in which the interval between both ends of the fastening connection units has been narrowed.

Advantageous Effects

In such an embodiment of the present invention, the joint parts of tubular bodies can be simply connected in a compression connection state in such a way as to manipulate a separate fastening tool so that the interval between both ends of the fastening connection units is narrowed in the state in which the fastening connection units have been set to surround the circumference of the joint parts of the tubular bodies and to push the fastening compression units (pressing devices) by a contact attributable to a fastening force at this time.

Furthermore, an embodiment of the present invention can provide a structure that can be smoothly manipulated by a fastening tool in the state in which the interval between both ends of the fastening connection units has been narrowed as much as possible because it includes the contact guide units.

In particular, in accordance with the structure and action of such a contact guide units, for example, when a compression connection work for the joint parts of tubular bodies having a large diameter is performed, a manipulation and compatibility corresponding to a fastening tool can be further improved because the fastening tool can be manipulated with it smoothly set by narrowing the interval between both ends of the fastening connection units.

DESCRIPTION OF THE DRAWINGS

FIG. I is a diagram schematically showing the entire structure of a compression connection device for pipes according to an exemplary embodiment of the present invention.

FIG. 2 is the compression connection device for pipes according to the exemplary embodiment of the present invention in an open state.

FIG. 3 is the compression connection device for pipes according to the exemplary embodiment of the present invention in a fastened state.

FIG. 4 shows an installation state of an elastic member according to the exemplary embodiment of the present invention in a fastened state.

FIG. 5 shows a formation structure of a guide hole according to the exemplary embodiment of the present invention in a fastened state.

FIG. 6 shows a configuration of a latching unit according to the exemplary embodiment of the present invention in a fastened state.

FIG. 7 shows an operation state of the latching unit according to the exemplary embodiment of the present invention in a fastened state.

FIG. 8 shows an operation state in a different direction of the latching unit according to the exemplary embodiment of the present invention.

MODE FOR INVENTION

Hereinafter, preferred exemplary embodiments of the present invention are described with reference to the accompanying drawings.

Exemplary embodiments of the present invention are described with the range in which those skilled in the art may practice the present invention.

Accordingly, exemplary embodiments of the present invention may be modified in various other forms and thus the claims of the present invention are not limited by the following exemplary embodiments.

FIG. 1 is a diagram schematically showing the entire structure of a compression connection device for pipes according to an exemplary embodiment of the present invention, and FIGS. 2 to 8 are diagrams illustrating a detailed structure and action of the compression connection device for pipes according to an exemplary embodiment of the present invention. Reference numeral 2 denotes a fastening connection unit, and reference numeral 4 denotes a fastening compression unit,

Referring to FIGS. 1 to 4, the fastening connection units 2 and the fastening compression units 4 may be formed to have a chain type connection structure, for example, so that a compression connection operation is performed by a fastening manipulation that narrows the interval between both ends of the fastening connection units 2 in the state in which the fastening connection units 2 and the fastening compression units 4 have surrounded the circumference of the joint parts P1 of the tubular bodies P.

The fastening connection unit 2 includes a plurality of connectors A. The connectors A are formed to have a connection structure which may form a circle so that they correspond to the circumference of the joint parts P1 of the tubular bodies P.

That is, as shown in FIGS. 1 and 2, the fastening connection unit 2 may be set to have a connection structure capable of being manipulated, for example, in the state in which the ends of three connectors A are connected by hinge coupling and may surround the circumference of the joint parts P1 of the tubular bodies P or may be separated from each other while rotating around a hinge coupling point.

The connectors A include contact surfaces A1 respectively, and are disposed in a connection state in which they can be pushed by the contact forces of the contact surfaces A1 in such a way as to enable the compression operation of the fastening compression units 4 to be described later when a fastening operation is performed.

Latching portions A2 are formed at the ends of the fastening connection units 2 on both sides so that the fastening connection units 2 may be fastened and manipulated in the state in which the interval between the ends of the fastening connection units 2 on both sides is narrowed by a separate fastening tool M, as shown in FIG. 1.

The latching portion A2 may be provided in a groove portion (or protrusion) form so that the fastening tool M can be set in the state in which it has been latched in the latching portion A2 in such a way as to be fastened and manipulated, for example,

Furthermore, the fastening tool M is formed to have a driving structure capable of being manipulated in the state in which it generates motive power by common hydraulic pressure or a common transmission method as well known in the art and capable of narrowing the interval between both ends the latching portions) of the fastening connection units 2.

As shown in FIG. 3, the fastening connection units 2 may be driven to generate a fastening force for press-connecting the circumference of the joint parts P1 of the tubular bodies P while being manipulated in the state in which the interval between the latching portions A2 at both ends of the fastening connection units 2 is narrowed by the fastening tool M in the state in which the fastening connection units 2 have been disposed to surround the circumference of the joint parts P1 of the tubular bodies P.

The fastening compression units 4 are formed to compress the circumference of the joint parts P1 of the tubular bodies P while being pushed by the contact force of the connectors A when the fastening connection units 2 perform the fastening operation.

The fastening compression units 4 include a plurality of compression units. When the fastening compression units 4 are installed to correspond to the fastening connection units 2, they may be installed to have a movable type compression structure capable of being moved along the circumference of the joint parts P1 of the tubular bodies P and a non-movable type compression structure.

For example, as shown in FIGS. 1 and 2, the fastening compression unit 4 may include movable type compression units B1 disposed to correspond to the ends of the fastening connection units 2 on both sides and fixed type compression units B2 disposed between both ends of the fastening connection units 2.

The movable type compression units B1 may be provided in the state in which they are coupled to the connectors A at the ends of the fastening connection units 2 on both sides by the coupling of slot grooves C1 and pins C2 and may slide along the circumference of the joint parts P1 of the tubular bodies P. In particular, when the movable type compression units B1 are coupled by the pins C2 on the side of the connectors A at the ends of the fastening connection units 2 on both sides as shown in FIG. 1, the movable type compression units B1 may be installed to rotate around the pins C2, as shown in FIG. 4, in addition to a sliding operation in the state in which the movable type compression units B1 is guided in the elongation direction of the slot groove C1. Accordingly, in such a structure, for example, when the movable type compression units B1 are pushed by the connectors A upon fastening and manipulation of the fastening connection units 2, the sliding operation can be performed to correspond to the circumference of the joint parts P1 of the tubular bodies P and a compression operation can also be performed in the state in which the push compression posture of the movable type compression units B1 can be properly changed while the movable type compression units B1 rotate around the coupling points of the pins C2. Accordingly, a problem (e.g., a phenomenon in which the joint parts of tubular bodies are stabbed) which may occur due to an unstable push posture of the movable type compression units B1 when the compression operation is performed can be actively improved.

The fixed type compression units B2 may be provided in the state in which they are fixed to the connectors A between the ends of the fastening connection units 2 on both sides by a fastening member, such as bolts or pins, so that they do not move along the circumference of the joint parts P1 of the tubular bodies P.

The movable type compression units B1 and the fixed type compression units B2 include compression surfaces B3. When the fastening connection units 2 are manipulated in the fastening state, the movable type compression units B1 and the fixed type compression units B2 are formed in an array in which the compression surfaces B3 may be subjected to a compression operation in the state in which they form a circular connection shape corresponding to the circumference of the joint parts P1 of the tubular bodies P.

That is, as shown in FIG. 3, when the fastening connection units 2 are fastened and manipulated, the fastening compression units 4 may operate to enable the compression operation in the direction in which the diameter of the joint part P1 of the tubular body P is reduced by the compression surfaces B3 while the movable type compression units B1 and the fixed type compression units B2 are pushed by the contact surfaces A1 of the connectors A.

The compression connection device for pipes according to an exemplary embodiment of the present invention includes contact guide units 6.

The contact guide units 6 are formed to have a structure capable of guiding the contact state of the fastening connection unit 2 and the fastening compression unit 4.

In particular, when the fastening connection units 2 are disposed to surround the circumference of the joint parts P1 of the tubular bodies P, the contact guide units 6 are formed to guide the fastening connection unit 2 and the fastening compression unit 4 in the contact state in which the interval between both ends (i.e., the latching portions) of the fastening connection units 2 has been further narrowed.

Referring back to FIGS. 1 and 2, each of the contact guide unit 6 includes a contact guide surface D1 formed on the side of the fastening connection unit 2 corresponding to the movable type compression unit B1 of the fastening compression unit 4 and an elastic member D2 formed to elastically push the movable type compression unit B1 along the contact guide surface D1.

The contact guide surface D1 is formed so that it is contacted in the state in which part of the movable type compression unit B1 has deviated from the contact surface A1 of the connector A disposed at the end of the fastening connection unit 2.

The contact guide surface D1 may be formed to be extended toward the end of the fastening connection unit 2 in the state in which it has been inclined from one side of the contact surface A1 of the fastening connector A corresponding to the movable type compression unit B1 to the inside of the contact surface A1, as shown in FIG. 4.

That is, the contact guide surface D1 is formed to have a contact guide area that has slantly deviated to the outside when the contact surfaces A1 of the fastening connection unit 2 are disposed to form a circle corresponding to the circumference of the joint parts P1 of the tubular bodies P, as shown in FIG. 2.

Furthermore, as shown in FIG. 4, the opposite side of the compression surface B3 is inclined to correspond to the contact guide surface D1 so that the contact guide of the movable type compression unit B1 is performed by the contact guide surface D1.

As shown in FIG. 4, the elastic member D2 may be installed between the movable type compression units B1 and the fixed type compression units B2.

For example, a compressive coil spring may be used as the elastic member D2. The elastic member D2 has one end supported by the movable type fastening compression unit B1 and the other end disposed to be supported by the fixed type compression unit B2. Accordingly, the movable type compression unit B1 moves along the contact guide surface D1, and is set so that the distance between the movable type compression unit B1 and the fixed type compression unit B2 is maintained to be flexibly widened.

For example, as shown in FIG. 2, when the fastening connection units 2 are set to be manipulated in such a way as to compress and connect the joint parts P1 of the tubular bodies P, the contact guide units 6 can provide a contact guide environment in which the movable type compression units B1 flexibly moves along the contact guide surface D1 and part thereof is externally located off the ends of the fastening connection units 2 on both sides.

Accordingly, the fastening connection units 2 can be set in the state in which the interval between the ends of the fastening connection units 2 on both sides has been further narrowed by the movement of the movable type compression units B1.

Furthermore, when the ends of the fastening connection units 2 on both sides are fastened and manipulated as shown in FIG. 6, the movable type compression units B1 move to the opposite sides along the contact guide surface D1 and are then pushed in the state in which they form a circle corresponding to the circumference of the joint parts P1 of the tubular bodies P along with the fixed type compression units B2.

In accordance with the structure and action of such a contact guide unit 6, particularly, the fastening connection units 2 can be set to be manipulated so that the ends (i.e., the latching portions) of the fastening connection units 2 are compressed and connected in the state in which the interval between the ends of the fastening connection units 2 has been narrowed as much as possible. Accordingly, for example, tool manipulation convenience and compatibility can be secured because a compression connection work for large-sized tubular bodies P can be smoothly performed by the fastening tool M having a size which is used to compress and connect tubular bodies P having a small or middle diameter.

The compression connection device for pipes according to an exemplary embodiment of the present invention may further include a holder unit 8, as shown in FIGS. 5 to 8.

The holder unit 8 is formed to have a structure capable of holding the ends of the fastening connection units 2 on both sides in the setting state when the fastening connection units 2 are set to surround the circumference of the joint parts P1 of the tubular bodies P.

Referring to FIGS. 5 to 8, the holder unit 8 may include a guide holder E disposed at the end of the fastening connection unit 2 on one side and configured to have a guide hole E1 formed therein and a latching unit F disposed at the end of the fastening connection unit 2 on the other side in the state in which the latching unit F can be latched into the guide hole E1 of the guide holder E.

For example, the guide holder E may have one end connected and fixed to the side of the end of the fastening connection unit 2 by a pin or bolt and may have the other end set to be extended toward the opposite side.

As shown in FIG. 5, the guide hole E1 may be formed in a slit hole type which is inwardly extended from an end on the non-fixing side of the guide holder E to an end on the fixing side thereof and has an opening portion.

Furthermore, a plurality of latching grooves E2 is formed within the guide hole E1 at a specific interval in the elongation direction of the guide hole E1 in the state in which the latching unit F may be detachably latched into the latching grooves E2.

If the latching grooves E2 are formed at a specific interval as described above, the ends of the fastening connection units 2 on both sides can be fastened in the state in which the interval between the ends of the fastening connection units 2 has been properly adjusted along the diameter of the joint parts P1 of the tubular bodies P in such a way as to correspond to the diameter of the joint parts P1.

The latching unit F is disposed at the end of the fastening connection unit 2 on the other side in the state in which it corresponds to the guide hole E1 of the guide holder E, and is formed to have a latching structure capable of latching and release on the side of the guide hole E1.

As shown in FIG. 6, the latching unit F includes a latching protrusion F1. The latching unit F may be installed on the side of the end of the fastening connection unit 2 in such a way as to move in the same direction as that in FIG. 6, and may be formed in such a way as to be manipulated so that the latching protrusion F1 is inserted into the latching groove E2 of the guide hole E1 in the latching state or separated therefrom.

That is, when the latching unit F is manipulated in the same direction as that in FIG. 7, the holder unit 8 is released because the latching unit F may move in the elongation direction of the guide hole E1 in the state in which it has been inserted into the guide hole E1 of the guide holder E.

Furthermore, when the latching unit F is manipulated in the same direction as that in FIG. 8, the holder unit 8 becomes the latching state because the latching protrusion F1 of the latching unit F is latched and inserted into any one of the latching grooves E2 of the guide hole E1. Accordingly, the latching unit F can hold the ends of the fastening connection units 2 on both sides in the connection state.

In accordance with the structure and action of such a holder unit 8, for example, when the fastening connection units 2 are set to surround circumference of the joint parts P1 of the tubular bodies P for the purpose of a compression work, the setting state can be prevented from being abnormally changed or released because the holder unit 8 can hold both ends of the fastening connection units 2 in a stable state.

Accordingly, the compression connection device for pipes according to the exemplary embodiment of the present invention can compress and connect the joint parts P1 of the tubular bodies P by the compression force of the fastening compression units 4 by manipulating the fastening connection units 2 in the direction in which the interval between the ends of the fastening connection units 2 on both sides is narrowed using the fastening tool M in the state in which the fastening connection units 2 are set to surround the circumference of the joint parts P1 of the tubular bodies P.

In particular, an exemplary embodiment of the present invention can provide a connection structure capable of further improving a manipulation convenience and compatibility corresponding to the fastening tool M because it includes the contact guide units 6 capable of setting the fastening connection units 2 in the state in which the interval between both ends of fastening connection units 2 has been narrowed as much as possible when the fastening connection units 2 are set on the side of the joint parts P of the tubular bodies P. 

1. A compression connection device for pipes, comprising: fastening connection units configured to comprise connectors connected to surround a circumference of joint parts of tubular bodies and to generate a fastening force for compressing and connecting the circumference of the joint parts of the tubular bodies while operating to narrow an interval between both ends of the fastening connection units by a fastening tool; a fastening compression unit configured to comprise a movable type compression unit and a fixed type compression unit disposed on a side of the fastening connection units in a state in which the fastening compression unit is capable of a compression operation in a direction in which a diameter of the circumference of the joint parts of the tubular bodies is narrowed while both ends of the fastening connection units are pushed in a contact state by the fastening force when the fastening connection units are manipulated to narrow the interval between both ends of the fastening connection units; contact guide units each configured to comprise a contact guide surface slantly formed on a side of the connector of the fastening connection unit in such a way as to guide the movable type compression unit of the fastening compression unit to enable the compression operation and an elastic member formed along the contact guide surface in such a way as to flexibly push the movable type compression unit.
 2. The compression connection device of claim 1, wherein: the fastening connection units have latching portions at ends of the fastening connection units on both sides, and each of the latching portions has a groove or protrusion form into which the fastening tool is latched in such a way as to be capable of the fastening operation.
 3. The compression connection device of claim 1, wherein the fastening connection units are connected in such a way as to narrow an interval between the connectors.
 4. The compression connection device of claim 1, wherein the movable type compression unit and the fixed type compression unit are disposed on the side of the fastening connection units in the state capable of the compression operation in the direction in which the diameter of the circumference of the joint parts of the tubular bodies is narrowed while the interval between the ends of the fastening connection units on both sides are manipulated to be narrowed.
 5. The compression connection device of claim 4, wherein: the movable type compression unit are disposed to correspond to the ends of the fastening connection units on both sides, and the fixed type compression units are arranged in a direction in which the movable type compression units are connected.
 6. The compression connection device of claim 5, wherein the movable type compression unit is set to be capable of the slide operation along the circumference of the joint parts of the tubular bodies on the side of the connectors of the ends of the fastening connection units on both sides.
 7. The compression connection device of claim 5, wherein the fixed type compression unit is fixed to the connector between the ends of the fastening connection units on both sides and is set to not move along the circumference of is the joint parts of the tubular bodies.
 8. The compression connection device of claim 1, wherein the contact guide units comprises a contact guide unit formed on the side of the connector of the fastening connection unit corresponding to the movable type compression unit and an elastic member formed to elastically push the movable type compression unit along the contact guide unit.
 9. The compression connection device of claim 1, wherein the contact guide surface is slantly formed from a first side of the contact surface of the connector in which the movable type compression unit is placed to a second side of the contact surface.
 10. The compression connection device of claim 1, wherein the elastic member is set to generate an elastic force in a state in which the movable type compression unit moves along the contact guide surface and is located off the end of the fastening connection unit.
 11. The compression connection device of claim 1, wherein: the compression connection device for pipes further comprises a holder unit corresponding to the fastening connection unit, and the holder unit comprises a guide holder disposed at an end of the fastening connection unit on a first side and configured to have a guide hole formed in the guide holder and a latching unit disposed at an end of the fastening connection unit on a second side in a state in which the latching unit is inserted into the guide hole of the guide holder in such a way as to be latched into the guide hole. 